Genus: Sacisaurus FERIGOLO & LANGER, 2007
Etymology: The genus name is formed from the Portuguese derivation of the indigenous-- Tupi--name, Saci (= a fabled entity of Brazilian lore that possessed a single leg) and Greek, sauros, "lizard": In an anecdotal allusion to the fact that only right femur of a new taxon has been found.

Species: agudoensis FERIGOLO & LANGER, 2007
Etymology: In reference to the town of Agudo, Rio Grande do Sul State, Brazil, where the material was found.

Holotype: MCN PV10041

Locality: Sacisaurus site, inside of the urban area of Agudo, 19°43'12"S, 47°45'04"W, Rio Grande do Sul State, Brazil.

Horizon: Corresponds to the top of the Alemoa Member, Santa Maria Formation, and to the Caturrita Formation.

Biostratigraphy:

Age: Late Carnian Stage-Early Norian Stage, Early to Middle Late Triassic Epoch, Late Triassic.

Material: Partial left mandible.

Referred material:

MCN PV10009-PV10011, PV10013-PV10016, PV10018, PV10019, PV10063, PV10075: Femora.

MCN PV10020: Tibia.

MCN PV10023, 10024: Pubes.

MCN PV10025: Ischium.

MCN PV10028, 10029, 10032, 10090, 10097: Vertebrae.

MCN PV10033: Scapula.

MCN PV10042-10044, PV10061: Partial lower jaws.

MCN PV10048: Mandible fragment lacking the rostral part.

MCN PV10049: Ectopterygoid.

MCN PV10050: Single maxilla.

MCN PV10051: Postorbital.

MCN PV10100: Ilium.

Number: Not given: Phalanges.

Reconstruction of the skull.